21353949

素因数分解:

$3^4\times {\mathrm{113}}^1\times {\mathrm{2333}}^1$

素因数の和:2458

約数の個数: 20

約数和(自身を含む): 32195196

約数和(自身を除く): 10841247

約数列:

[1, 3, 9, 27, 81, 113, 339, 1017, 2333, 3051, 6999, 9153, 20997, 62991, 188973, 263629, 790887, 2372661, 7117983, 21353949]

約数ペア:

[(1, 21353949), (3, 7117983), (9, 2372661), (27, 790887), (81, 263629), (113, 188973), (339, 62991), (1017, 20997), (2333, 9153), (3051, 6999)]